1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e03e91e76e9082500cc6f8d22f066f59a22f352727268a945f037e9b395537. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc0680e-ff77-422c-9353-cfb42c633d93.json and https://artists.proofprofile.net/proofs/artist/adc0680e-ff77-422c-9353-cfb42c633d93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc405684b942a3f7c02e5216767cb01afcebf2bba0f82d19f00e7544199c05af5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO07910420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9efb9791705fe7a4640f6df2e70cf61c5ac25dba45036198d7145c1ed9f1c9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO08053950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cb8b7d96badecb4dde59136d60808da4246f752cbbf49691bcce01040b12c3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO07814660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f776cc10efa2422eee02ec924bd47ae5a805c990deda320dc09eb588ddd1c7e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO07710910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c88379b482fcd7f2e932d74c162b28679a629e5bdc9053d86a0ad94c6a0af5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO07805760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdc555b027e6cbab23774113ae6211e80a30ba8664617c789bdf205459dd26c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO07815170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e6a142b18cda5a9bdaf07affc7abc12bd8fd90f59e45dbf1c30ea06dc52e9b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO07809110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb505ae68db2a91dd203524bb117a09389e7f9601bbcbefd6cf33948a02d327fd. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:32:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPFH09201280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a882e94d5d0d1d2f99f16d3de1e7556e159ddab74fe83cb3ad09ae42e42fcea. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPFH09201320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9578e297cc4380aef7b2cdb9909f041c5d8c7f5dae11812fe56252f51cb0819. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPFH09108840.